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5296518 |
Hydrophilic polyurethaneurea foams containing no toxic leachable additives and method to produce such foams
Hydrophilic polyurethane urea foams which are made without toxic, leachable additives are disclosed. High molecular weight, isocyanate-terminated, ethylene oxide-rich prepolymers are used in place...
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5093383 |
Polyurethane/urea foams from isocyanate prepolymers and isocyanate reactive imino/enamino functional reactants
Polyurethane/urea foams are derived from prepolymers having branched chain linked isocyanate end groups and components containing isocyanate reactive imino/enamino-functional compounds.
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4987213 |
Polyurethane and process for preparing same
A new polyurethane as well as a process for preparing same is disclosed. The new polyurethane contains therein a hard segment derived from at least one polyhydroxy substance selected from the group...
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4906674 |
Polysocyanate compositions
A polyisocyanate composition, suitable for use in the production of elastomers by the RIM process, or foams, said composition being the product of reacting an imino-functional or enamine-containing...
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4751254 |
Process for in situ coloration of thermosetting resins
This invention relates to a process for coloring polyurethane resins during the production of same with reactive colorants derived from novel polyalkoxytrifluoroaniline intermediates. These...
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4596835 |
Reinforced cellular or noncellular polyurethane molded parts
Reinforced cellular or noncellular molded polyurethane parts are prepared by heating a mixture of reinforcing materials and a heat-curable composition of polyisocyanates and polyols in an open or...
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4454253 |
Polyurethane foam game ball, composition and process
An improved game ball is manufactured from a polyurethane foam prepared from a hydroxyl-containing diene polymer, a catalyst system comprised of a tin compound and a tertiary amine and a surfactant...
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4424288 |
Carbodiimide-modified polymethylene polyphenylene polyisocyanates for use in the preparation of polyisocyanurate-polyurethane foams
Liquid carbodiimide-modified organic polyisocyanates are prepared by reacting a crude polymethylene polyphenylene polyisocyanate containing no more than 70 weight percent diphenylmethane...
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4409341 |
Composition for fire retardant urethane foam
A composition for polyurethane foam comprising (a) polyols containing at least one of alkylene oxide adducts of aniline-formaldehyde condensates and alkylene oxide adducts of reduced compounds of...
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4384052 |
Polyurethanes produced from an adduct of an organic polyisocyanate and certain amines
Reaction products of an organic polyisocyanate with a reactive diamine such as bis(4-aminocyclohexyl)methane and isophorone diamine, prepared at a temperature of between 135° C. and 200° C., are...
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4346181 |
Method of reducing formaldehyde emissions from formaldehyde condensation polymers
A method of reducing the formaldehyde emissions from formaldehyde condensation polymers is disclosed. A substance having two or more amide linkages, such as a polyacrylamide polymer is incorporated...
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4337333 |
Substituted polyisocyanate or polyisocyanate mixtures of the diphenyl methane series containing chlorosulfonyl groups
The instant invention is directed to a substituted polyisocyanate or polyisocyanate mixtures of the diphenyl methane series containing chlorosulfonyl groups, a process for the preparation thereof...
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4322364 |
Modified isocyanate compositions
A process for the production of a modified isocyanate by reacting a composition containing carbodiimide groups and free isocyanate groups with a diester of an aliphatic dicarboxylic acid in the...
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4276404 |
Process for the production of inorganic-organic synthetic materials
The instant invention is directed to a process for the production of inorganic-organic synthetic materials having high strength, elasticity, dimensional stability under heat, and flame resistance,...
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4276386 |
Diisocyanates having urea groups, a process for their preparation and their use in the production of polyurethanes
This invention relates to new diisocyanates containing urea groups which are liquid at room temperature or can be liquefied by heating to a temperature of up to 80° C. These novel diisocyanates...
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4254228 |
Method of making foamed resins with internal mold-release agents
A reaction product of a fatty acid ester and an organic polyisocyanate is included in a foamable reaction mixture containing an organic polyisocyanate to provide a molded product which can be...
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4208486 |
Stabilization of organic amide solvents and polymer solutions thereof
Organic amides, solutions of polymers thereof, which polymers are subject to hydrolysis and degradation in the presence of amines, and polymers isolated therefrom are stabilized by the presence of...
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4201847 |
Process of preparing foams with internal mold-release agents
A reaction product of a fatty acid ester and an organic polyisocyanate is included in a foamable reaction mixture containing an organic polyisocyanate to provide a molded product which can be...
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4199524 |
Stable liquid carbodiimide-containing polyisocyanate compositions
Highly stable liquid 4,4'-diphenylmethane diisocyanate (MDI) containing MDI-carbodiimide adducts are prepared by heating MDI at a temperature of from 180° C. to 250° C. for a period of from one...
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4197374 |
Cellular products based on halocarboxylic acid-modified polyisocyanates
Stable, liquid polyisocyanate compositions are prepared by reacting a polyisocyanate or a mixture of polyisocyanates and halogen-containing carboxylic acids. The polyisocyanates hereof are used to...
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4194035 |
Modified polyisocyanates containing sulfonic acid ester groups
The instant invention is directed to a process for the preparation of modified polyisocyanates which contain sulfonic acid alkyl ester groups and in which the isocyanate groups may be at least...
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4190709 |
Mercury and copper selective metal chelating resins
Mercury and copper ions may be removed very selectively from aqueous solutions by means of a metal-chelating resin consisting of a polymer produced by the condensation of a phenolic component...
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4181770 |
Isocyanate-terminated branched polyethylene glycol and polyester polyurethane foams
A hydrophilic foam is produced by mixing an isocyanate terminated branched polyethylene polyol with a polyester prepolymer and water. The foam may be used to impregnate fabrics, e.g., non-wovens,...
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4181782 |
Preparation of polyisocyanates having biuret groups and their use in synthetic foamed resins and lacquers
The present invention relates to a process for the preparation of polyisocyanates having biuret groups by reaction of excess quantities of organic polyisocyanates with compounds which react with...
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4148819 |
Aliphatic diisocyanates
Covers a diisocyanate having the following structural formula: ##STR1## WHERE X IS AN AVERAGE NUMBER RANGING FROM ABOUT 6 TO 50, AND Y AND Z ARE AVERAGE NUMBERS RANGING FROM ABOUT 1 TO ABOUT 20,...
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4147714 |
Process for the preparation of polyisocyanates which contain biuret groups
This invention relates to an improved process for the preparation of polyisocyanates which contain biuret groups by the direct reaction of polyamines in vapor form with polyisocyanates.
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4146509 |
Process for the production of inorganic-organic plastics
The instant invention is directed to a process for the production of inorganic-organic resins, by reaction of an organic polyisocyanate with aqueous basic solutions having an inorganic solid...
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4129696 |
Process for the production of inorganic-organic plastic composites
The instant invention is directed to a novel process for the production of inorganic/organic plastic materials and the resultant products. The process generally comprises reacting an aqueous alkali...
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4108807 |
Organo-metallate polymers and processes for the manufacture thereof
This invention relates to a process for the manufacture of an organo-metallate polymere which comprises reacting in a liquid phase a metallate with a pseudohalide compound and/or other...
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4105594 |
Highly filled polyurea foams
The instant invention relates to hydrophobic inorganic-organic lightweight foams produced from aqueous suspensions of finely divided water-insoluble inorganic materials and polyisocyanates. More...
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4101464 |
Process for preparing foamed solids using two or more azo compounds
Cellular polymeric solids are made by mixing an acidulous or acidic polymerizable medium that is polymerizable and/or cross-linkable by a free radical mechanism (e.g. an unsaturated polyester) with...
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4101465 |
A cocatalyst system for trimerizing isocyanates
A novel cocatalyst combination for the trimerization of polyisocyanates to polyisocyanurates is disclosed. The catalyst combination comprises: (a) alkali metal glycine salts, (b)...
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4097423 |
Inorganic-organic compositions
Inorganic-organic compositions obtained from a mixture of components comprising: (a) from 5-98% by weight of an organic polyisocyanate; (b) from 2-95% by weight of an aqueous alkali metal...
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4097422 |
Inorganic-organic compositions
Inorganic-organic compositions obtained from a mixture of components comprising: (a) from 5 - 98% by weight of an organic polyisocyanate (b) from 2 - 95% by weight of an aqueous silica sol...
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4088665 |
Process for the partial carbodiimidization of organic isocyanates
The present invention relates to a new process for the partial carbodiimidization of the isocyanate groups of organic mono-, or di- and/or polyisocyanates, the mixtures which can be obtained by...
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4055549 |
Thermoplastically processable polyurethanes based on tolylene diisocyanate
Thermoplastically processable polyurethanes are produced by the reaction of tolylene diisocyanate, at least one polycaprolactone diol, a low molecular weight diol chain extender and water.
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4055548 |
Storage-stable liquid polyisocyanate composition
A novel liquid isocyanate prepolymer composition is disclosed. The prepolymer is obtained by reacting a polymethylene polyphenylisocyanate containing from about 65 to about 85 percent by weight of...
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4043949 |
Oxidative stability of flexible polyurethane foams
Cellular polyurethane exhibiting excellent thermal and oxidative stability can be prepared using specified methyl-, allyl-, phenyl- or benzyltin compounds as the polymerization catalyst. These...
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4043951 |
Acrylonitrile-capped polyether-siloxane
Acrylonitrile-capped polyoxyalkylene compounds; siloxane polymers modified with the corresponding radicals of said compounds; solvent compositions containing said siloxane polymers; a process for...
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4039483 |
Method of producing an ion exchanger by reacting unsaturated vulcanized or powdered rubbers with iodine isocyanate and then introducing ion exchange groups by further reaction
An ion exchanger is produced by reacting a substance containing carbon-to-carbon unsaturated double bond with a solution of iodine isocyanate in an organic solvent and then reacting the resulting...
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4038221 |
Process for the production of cold hardening foams containing urethane groups by in-mold foaming
This invention relates to a process for the making of cold-hardening foams containing urethane groups by in-mold foaming. The need to use a relatively large number of additives like emulsifiers,...
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4033912 |
Process for molding polyurethane foams
The mold release properties of a molded polyurethane foam are improved by including the foamable mixture to be molded, a reaction product of a polysiloxane and an organic monoisocyanate or...
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4013701 |
Process for the production of polyisocyanates
The instant invention relates to a process for producing modified polyisocyanates suitable for the production of hydrophilic foams, wherein an organic polyisocyanate is heat treated with a...
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3993610 |
Polyurethane foam
Selected chlorine-containing methylene-bridged diaryl diisocyanates are used in the production of polyurethane foam.
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3988268 |
Polyurethane foam plastics which contain ionic groups
The invention relates to polyurethane foam plastics having a density of from about 7 to about 100 kg/m 3 which contain from about 0.1 to about 5 mVal/g of mobile ions consisting of cations and/or...
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3988269 |
High load-bearing, high strength polyurethane foam
Selected chlorine-containing methylene bridged diaryl diisocyanates are used in the production of high load-bearing, high strength polyurethane foam.
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3983081 |
Inorganic-organic composition
Inorganic-organic compositions obtained from a mixture of components comprising: A. from 5-98% by weight of an organic polyisocyanate B. from 2-95% by weight of an aqueous alkali metal...
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3979342 |
Manufacture of vesiculated polymer granules
The invention relates to a process for preparing vesiculated cross-linked polyester resin granules by polymerizing a water-in-oil-in-water emulsion formed from a polymerizable water-immiscible oil...
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3970618 |
Process for the production of polyurethane foams
Process for the production of a hydrophilic polyurethane foam having a high water retention capacity by reacting a polyhydroxyl compound having an OH number from 900-1800 and a polyisocyanate...
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3968089 |
Polymer-prepolymer composition prepared by polymerizing an ethylenically unsaturated monomer in the presence of an isocyanate-terminated prepolymer
Novel isocyanate-terminated polyether-based polymer prepolymers useful in urethane applications are produced by polymerization of one or more ethylenically unsaturated monomers in the presence of...
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